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T
Hans Johnson e32d75f876 ENH: Update to TBB 2017 (2016-09-08 release) 
The new release TBB is now under a new more
open license.
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

The list of most significant changes made over time in
Intel(R) Threading Building Blocks (Intel(R) TBB).

Intel TBB 2017
TBB_INTERFACE_VERSION == 9100

Changes (w.r.t. Intel TBB 4.4 Update 5):

- static_partitioner class is now a fully supported feature.
- async_node class is now a fully supported feature.
- Improved dynamic memory allocation replacement on Windows* OS to skip
    DLLs for which replacement cannot be done, instead of aborting.
- Intel TBB no longer performs dynamic memory allocation replacement
    for Microsoft* Visual Studio* 2008.
- For 64-bit platforms, quadrupled the worst-case limit on the amount
    of memory the Intel TBB allocator can handle.
- Added TBB_USE_GLIBCXX_VERSION macro to specify the version of GNU
    libstdc++ when it cannot be properly recognized, e.g. when used
    with Clang on Linux* OS. Inspired by a contribution from David A.
- Added graph/stereo example to demostrate tbb::flow::async_msg.
- Removed a few cases of excessive user data copying in the flow graph.
- Reworked split_node to eliminate unnecessary overheads.
- Added support for C++11 move semantics to the argument of
    tbb::parallel_do_feeder::add() method.
- Added C++11 move constructor and assignment operator to
    tbb::combinable template class.
- Added tbb::this_task_arena::max_concurrency() function and
    max_concurrency() method of class task_arena returning the maximal
    number of threads that can work inside an arena.
- Deprecated tbb::task_arena::current_thread_index() static method;
    use tbb::this_task_arena::current_thread_index() function instead.
- All examples for commercial version of library moved online:
    https://software.intel.com/en-us/product-code-samples. Examples are
    available as a standalone package or as a part of Intel(R) Parallel
    Studio XE or Intel(R) System Studio Online Samples packages.

Changes affecting backward compatibility:

- Renamed following methods and types in async_node class:
    Old                   New
    async_gateway_type => gateway_type
    async_gateway()    => gateway()
    async_try_put()    => try_put()
    async_reserve()    => reserve_wait()
    async_commit()     => release_wait()
- Internal layout of some flow graph nodes has changed; recompilation
    is recommended for all binaries that use the flow graph.

Preview Features:

- Added template class streaming_node to the flow graph API. It allows
    a flow graph to offload computations to other devices through
    streaming or offloading APIs.
- Template class opencl_node reimplemented as a specialization of
    streaming_node that works with OpenCL*.
- Added tbb::this_task_arena::isolate() function to isolate execution
    of a group of tasks or an algorithm from other tasks submitted
    to the scheduler.

Bugs fixed:

- Added a workaround for GCC bug #62258 in std::rethrow_exception()
    to prevent possible problems in case of exception propagation.
- Fixed parallel_scan to provide correct result if the initial value
    of an accumulator is not the operation identity value.
- Fixed a memory corruption in the memory allocator when it meets
    internal limits.
- Fixed the memory allocator on 64-bit platforms to align memory
    to 16 bytes by default for all allocations bigger than 8 bytes.
- As a workaround for crashes in the Intel TBB library compiled with
    GCC 6, added -flifetime-dse=1 to compilation options on Linux* OS.
- Fixed a race in the flow graph implementation.

Open-source contributions integrated:

- Enabling use of C++11 'override' keyword by Raf Schietekat.

------------------------------------------------------------------------
2016-09-28 21:12:48 +02:00

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<h1 class="title">Intel&reg; Threading Building Blocks.<br>Stereo sample</h1>
</div>
<p>
The Stereo example is an implementation of the algorithm that applies stereoscopic 3D effect on two input images and achieved by means of encoding each eye's image using filters of different colors: red and blue -
<a href="http://en.wikipedia.org/wiki/Anaglyph_3D"><i>Anaglyph effect</i></a>.
<br><br>
The example uses the flow graph interface and can be executed both on CPU and GPU for image processing.
The output of this application is a PNG image with the anaglyph effect applied.
<br><br>
<i>
This example includes software developed by Lode Vandevenne. See
<a href="#copyright">here</a> for copyright information.
</i>
<br>
It exemplifies the opencl_node usage in the flow graph interface in context of creating a stereo image from two input images.
<br><br>
This example uses C++11 lambda expressions. Specifying a compiler option such as -std=c++11 or similar might be necessary in order to build the example.
For more information please refer to the documentation for the compiler you use.
</p>
<div class="changes">
<div class="h3-alike">System Requirements</div>
<input type="checkbox">
<div class="show-hide">
<p>
For the most up to date system requirements, see the <a href="http://software.intel.com/en-us/articles/intel-threading-building-blocks-release-notes">release notes.</a>
</p>
<p>
Additionally, you have to install OpenCL&trade; version 1.2 or higher in order to run this example. See the <a href="https://software.intel.com/en-us/articles/opencl-drivers">OpenCL&trade; Drivers and Runtimes for Intel&reg; Architecture</a>.
</p>
</div>
</div>
<div class="changes">
<div class="h3-alike">Files</div>
<input type="checkbox" checked="checked">
<div class="show-hide">
<dl>
<dt><a href="stereo.cpp">stereo.cpp</a>
<dd>The implementation of stereo image creation algorithm based on the flow graph interface.
<dt><a href="lodepng.cpp">lodepng.cpp</a>
<dd>Library for reading and writing png images.
<dt><a href="lodepng.h">lodepng.h</a>
<dd>Public header file for the lodepng library.
<dt><a href="utils.h">utils.h</a>
<dd>Support functions for this example.
<dt><a href="imageEffects.cl">imageEffects.cl</a>
<dd>OpenCL kernel file with image effects algorithms.
<dt><a href="Makefile">Makefile</a>
<dd>Makefile for building the example.
</dl>
</div>
</div>
<div class="changes">
<div class="h3-alike">Directories</div>
<input type="checkbox" checked="checked">
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<dl>
<dt><a href="msvs/">msvs</a>
<dd>Contains Microsoft* Visual Studio* workspace for building and running the example (Windows* systems only).
<dt><a href="xcode/">xcode</a>
<dd>Contains Xcode* IDE workspace for building and running the example (OS X* systems only).
</dl>
<p>For information about the minimum supported version of IDE, see <a href="http://software.intel.com/en-us/articles/intel-threading-building-blocks-release-notes">release notes.</a></p>
</div>
</div>
<div class="changes">
<div class="h3-alike">Build instructions</div>
<input type="checkbox" checked="checked">
<div class="show-hide">
<p>General build directions can be found <a href="../../index.html">here</a>.</p>
</div>
</div>
<div class="changes">
<div class="h3-alike">Usage</div>
<input type="checkbox" checked="checked">
<div class="show-hide">
<dl>
<dt><tt>stereo <i>-h</i></tt>
<dd>Prints the help for command line options
<dt><tt>stereo [<i>-v</i>] [<i>-alg</i>=value] [<i>first_filename</i>] [<i>second_filename</i>]</tt>
<dd><i>-v</i> print diagnostic output to screen<br>
<i>-alg</i> name of the used pipeline realization - can be host, target (default) or host_target<br>
<i>first_filename</i> first input file name<br>
<i>second_filename</i> second input file name<br>
</dl>
</div>
</div>
<br>
<a href="../index.html">Up to parent directory</a>
<hr>
<a name="copyright"></a>
<div class="changes">
<div class="h3-alike">Legal Information</div>
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<p>
Intel and the Intel logo are trademarks of Intel Corporation in the U.S. and/or other countries.
<br>* Other names and brands may be claimed as the property of others.
<br>&copy; 2016, Intel Corporation
</p>
<p>
LodePNG version 20160409
Copyright (c) 2005-2016 Lode Vandevenne
</p>
<p>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
<br>
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
<ol>
<li>The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
<li>Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
<li>This notice may not be removed or altered from any source
distribution.
</ol>
</p>
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